CN115341207A - 一种钛合金激光制备多物相增强镍基耐磨层的方法 - Google Patents
一种钛合金激光制备多物相增强镍基耐磨层的方法 Download PDFInfo
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- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims description 26
- 229910052759 nickel Inorganic materials 0.000 title claims description 12
- 238000004372 laser cladding Methods 0.000 claims abstract description 21
- 238000000576 coating method Methods 0.000 claims abstract description 6
- 239000011812 mixed powder Substances 0.000 claims abstract description 6
- 239000011248 coating agent Substances 0.000 claims abstract description 5
- 239000011230 binding agent Substances 0.000 claims abstract description 4
- 229910021193 La 2 O 3 Inorganic materials 0.000 claims description 10
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 239000010936 titanium Substances 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 235000019353 potassium silicate Nutrition 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims 2
- 239000011159 matrix material Substances 0.000 claims 2
- 239000010959 steel Substances 0.000 claims 2
- 239000000126 substance Substances 0.000 claims 2
- 238000007605 air drying Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000005253 cladding Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 3
- 238000005728 strengthening Methods 0.000 abstract description 2
- 239000000919 ceramic Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 239000002244 precipitate Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241001085205 Prenanthella exigua Species 0.000 description 1
- 229910004339 Ti-Si Inorganic materials 0.000 description 1
- 229910010978 Ti—Si Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011156 metal matrix composite Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
- C23C24/106—Coating with metal alloys or metal elements only
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0005—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with at least one oxide and at least one of carbides, nitrides, borides or silicides as the main non-metallic constituents
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Abstract
本发明涉及表面强化技术领域，公开了一种激光熔覆制备TA2钛合金耐磨涂层的方法。步骤如下：将质量分数（wt%）为86KF110‑10Si3N4‑1La2O3‑3Cu混合粉末用粘结剂预置于TA2钛合金表面，采用激光熔覆技术处理表面形成熔覆层，工艺参数：激光功率900 W，激光束扫描速率5～10 mm/s，光斑直径4.5 mm。本发明能够获得耐磨性良好且与TA2呈良好冶金结合的激光熔覆层。
Description
技术领域
本发明涉及一种钛合金激光制备多物相增强镍基耐磨层的方法，属于材料表面强化技术领域，特别涉及一种在TA2钛合金表面激光熔覆KF110-Si3N4-La2O3-Cu制备耐磨复合材料的方法。
背景技术
钛合金具有高的比强度，良好的耐腐蚀及塑韧性等优点，已被广泛的应用于航空航天、交通运输、石油化工等领域。但钛合金也存在摩擦系数较大、耐磨性差、高温下易氧化严重等缺陷，在当前材料表面技术和制造业高速发展的情况下，进一步提高钛合金表面性能成为近几年研究热点。激光熔覆陶瓷增强金属基复合材料是一种有效的表面改性技术。利用激光熔覆技术的快速冷却、热输入和畸变较小、涂层稀释率低等特点，可有效改善金属性能，修复零件的各种缺陷。KF110（镍包覆石墨粉）不仅具有良好的电导率和磁导率，且密度低，综合性能优异；镍包覆石墨粉也是重要的功能涂层材料。这种粉末制备的涂层可以对基体提供良好的结合强度和所需要的机械性能。石墨被用作固体润滑剂以使涂层具有良好的润滑性和耐磨性，在金属材料表面改性的应用中具有广阔的应用前景。钛合金激光制备多物相性，即在激光熔覆层中产生了非晶相、纳米晶相及各类其它晶化相，从而提升其耐磨性。
发明内容
基于上述科学原理，为进一步增强钛合金表面性能，本发明提供了一种钛合金激光制备多物相增强镍基耐磨层的方法，即选用TA2钛合金作为基材，并对其进行激光熔覆处理，提高表面耐磨性能，TA2钛合金成分（wt %）：6.400Al，1.900Zr，1.800V， 1.300Mo，0.008N，0.070O， 0.005H，余量Ti。混合粉末成分及质量分数（wt %）为：86KF110，10Si3N4，1La2O3，3Cu；各组分纯度大于99.5％，Si3N4尺寸50 ~200 μm，La2O3尺寸1~100 μm，Cu尺寸150~250 μm，所述KF110镍包石墨粉，采用雾化法制得呈颗粒状，尺寸50～200 μm，KF110成分（wt %）：40C，0.05Al，0.05Cr，余量Ni。一种钛合金激光制备多物相增强镍基耐磨层的方法，具体步骤：将TA2牌号钛合金切割成边长尺寸10 mm的正方体并清理表面。将正方体TA2钛合金块表面用120号砂纸打磨平整，后用体积百分比为25%硫酸水溶液对表面进行5～10 min酸洗，后用清水冲洗，用酒精处理待熔表面。用水玻璃（Na2O·SiO2）作为粘结剂滴入质量10g的KF110-Si3N4-La2O3-Cu混合粉末，充分搅拌均匀后预置于TA2钛合金表面，自然风干形成厚度0.8mm预置层，工艺参数：激光功率900 W，激光束扫描速率5～10 mm/s，光斑直径4.5mm，搭接率25%，采用氩气作为保护气，流速30 L/min。
图1a表明，KF110-Si3N4-La2O3-Cu激光熔覆层中形成了均匀致密的微观结构，无明显气孔和裂纹，组织结构较为细化；在熔覆层与TA2基体之间可观察到一条亮白色的结合线，并产生良好冶金结合；图1b表明，在熔覆层中产生了附着在基底上的树枝状TiN陶瓷析出物；图1c表明，块状Ti5Si3陶瓷析出物也在熔覆层中产生。
如图2所示，KF110-Si3N4-La2O3-Cu激光熔覆层的XRD图谱表明，在稀释效应作用下，大量Ti进入熔池，通过原位反应生成了陶瓷相，证实了Ti5Si3和TiN存在。
图3表明，由于硬质陶瓷相和非晶/纳米晶的产生，KF110-Si3N4-La2O3-Cu熔覆层的磨损体积损失约为基体1/4，极大提高了熔覆层的耐磨性。
本发明具有以下有益效果：
本发明通过在预熔激光熔覆粉末中添加具有良好润滑性和导热性的KF110，促进了均匀致密激光熔覆层的形成。
本发明通过在激光熔覆粉末中添加La2O3，通过细晶强化降低了熔覆层组织内应力，减少缺陷的形成。
本发明通过在激光熔覆粉末中添加Si3N4，与Ti反应生成Ti-Si和Ti-N等硬质相，增强了熔覆层的耐磨性。
利用本发明技术能够获得耐磨性好且与TA2基材冶金结合良好的激光熔覆层，在实际生产中具有一定应用价值，适用于工业结构件制备及修复领域。
附图说明
图1为KF110-Si3N4-La2O3-Cu激光熔覆层SEM像：(a) 结合区，(b) 树枝状陶瓷析出物，(c) 块状陶瓷析出物。
图2为KF110-Si3N4-La2O3-Cu激光熔覆层的X射线衍射图。
图3.为TA2钛合金及86KF110-10Si3N4-1La2O3-3Cu（wt %）激光熔覆层磨损体积与磨损时间曲线图。
具体实施方式
实施例1：
将TA2牌号钛合金切割成边长10 mm的正方体并清理表面。
将其中10 mm×10 mm的TA2钛合金块表面用120号砂纸打磨平整，后用体积百分比为25 %硫酸水溶液对表面进行5～10 min酸洗，后用清水冲洗，用酒精处理待熔表面。
用分析天平称量10 g质量分数比例为86%KF110-10%Si3N4-1%La2O3-3%Cu混合粉末，用水玻璃（Na2O·SiO2）作为粘结剂滴入质量为10 g的KF110-Si3N4-La2O3-Cu混合粉末，充分搅拌均匀后预置于TA2钛合金表面，自然风干形成厚度0.8mm预置层。
所述激光熔覆工艺参数：激光功率900 W，激光束扫描速率5～10 mm/s，光斑直径4.5 mm，搭接率25 %，采用氩气作为保护气，流速30 L/min。
TA2钛合金表面完全熔化沉积后关闭激光，等待2～3秒后关闭保护气。
Claims (1)
1.一种钛合金激光制备多物相增强镍基耐磨层的方法，其特征在于：
（1）所述基体材料为边长10 mm的正方体TA2钛合金，化学成分（wt %）：6.400Al，1.900Zr，1.800V，1.300Mo，0.008N，0.070O，0.005H，余量Ti；涂覆前将其表面用120号砂纸打磨平整，用体积百分比25 %硫酸水溶液对表面进行5～10 min酸洗，后用清水冲洗，用酒精处理待熔表面；
（2）混合粉末成分及质量分数（wt %）：86KF110，10Si3N4，1La2O3，3Cu；KF110化学成分及质量分数（wt %）：40C，0.05Al，0.05Cr，余量Ni；各组分纯度大于99.5％，KF110和Si3N4尺寸50 ~200 μm，La2O3尺寸1~100 μm，Cu尺寸150~250 μm；
（3）将一定质量分数比例KF110-Si3N4-La2O3-Cu待熔粉末通过和水玻璃（Na2O·SiO2）所制粘结剂混合后均匀涂覆在基体表面，自然风干后形成厚度0.8 mm预置层，经激光熔覆处理制备镍基耐磨层，激光熔覆工艺参数：激光功率900 W，激光束扫描速率5～10 mm/s，光斑直径4.5 mm，搭接率25 %，采用氩气作为保护气，流速30 L/min。
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102618866A (zh) * | 2012-02-23 | 2012-08-01 | 山东大学 | 一种增强钛合金表面激光熔覆层的方法 |
| CN110202147A (zh) * | 2019-07-02 | 2019-09-06 | 山东建筑大学 | 一种通过激光熔化沉积制备非晶缓冲梯度复合材料的方法 |
| CN112663054A (zh) * | 2021-01-13 | 2021-04-16 | 山东建筑大学 | 一种钛合金激光制备镍包石墨粉改性防护层的方法 |
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| CN102618866A (zh) * | 2012-02-23 | 2012-08-01 | 山东大学 | 一种增强钛合金表面激光熔覆层的方法 |
| CN110202147A (zh) * | 2019-07-02 | 2019-09-06 | 山东建筑大学 | 一种通过激光熔化沉积制备非晶缓冲梯度复合材料的方法 |
| CN112663054A (zh) * | 2021-01-13 | 2021-04-16 | 山东建筑大学 | 一种钛合金激光制备镍包石墨粉改性防护层的方法 |
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