CN107434415A - 一种高热稳定性和良好导热性的聚晶立方氮化硼复合片及其生产方法 - Google Patents
一种高热稳定性和良好导热性的聚晶立方氮化硼复合片及其生产方法 Download PDFInfo
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 62
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims abstract description 40
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Abstract
本发明属于超硬材料技术领域，具体涉及一种高热稳定性和良好导热性的聚晶立方氮化硼复合片及其生产方法，方法包括以80％‑87％的镀镍立方氮化硼颗粒、1％‑3％的铝粉、1％‑3％的金属铌和1％‑5％的碳化钒，余量为硅粉的配方准备原材料，将原材料混合在一起8‑15小时，组装后，在90‑100MPa和1400‑1600℃的条件下，合成。本发明采用高含量镀镍立方氮化硼颗粒和钨、钴、铝或铝陶瓷等结合剂所得的产品，镀镍立方氮化硼颗粒粒度大，导热率高，高浓度，断裂韧性和抗冲击性能优异且化学惰性高，在淬火钢、铸铁、碳素钢、模具钢等难削材料的高速精加工中具有更高的寿命和耐热性及热稳定性。
Description
技术领域
本发明属于超硬材料技术领域，具体涉及一种高热稳定性和良好导热性的聚晶立方氮化硼复合片及其生产方法。
背景技术
目前，在一些难以切削材料的高速精加工中，如淬火钢、铸铁、碳素钢等，要求刀具加工材料具有高热稳定性和良好的导热性，聚晶金刚石等刀具复合片材料在切削过程中，由于温度过高，很容易发生断裂现象，影响工作效率。立方氮化硼的硬度仅次于金刚石，具有很高的热稳定性和极强的化学稳定性，可以有效代替聚晶金刚石复合片，作为黑色金属的加工刀具的材料。
现国内生产聚晶立方氮化硼刀具厂家基本依靠进口西方发达国家的聚晶立方氮化硼复合片材料，价格昂贵。现有的生产工艺基本是；聚晶立方氮化硼层是由下述重量份原料制备的：70～85份的立方氮化硼微粉、10～15份的金属结合剂、5～10份的陶瓷添加剂。其生产方法是按照下述步骤进行的：A、混合均匀；B、将混合料和硬质合金基体装入有盐管屏蔽层隔离的钼杯中，加热、合成。然而，现有工艺生产出的聚晶立方氮化硼复合片的热稳定性和导热性又待进一步提高，故，有进一步研究聚晶立方氮化硼复合片的生产工艺的必要性。
发明内容
本发明要解决的技术问题是提供一种高热稳定性和良好导热性的聚晶立方氮化硼复合片及其生产方法，以提高聚晶立方氮化硼复合片的热稳定性和导热性。
为解决上述技术问题，本发明采用如下的技术方案：
本发明的一种高热稳定性和良好导热性的聚晶立方氮化硼复合片，由下述原料制备而成：80％-87％的镀镍立方氮化硼颗粒、1％-3％的铝粉、1％-3％的金属铌和1％-5％的碳化钒，余量为硅粉。
优选地，镀镍立方氮化硼颗粒的径粒为2-4微米。
优选地，铝粉的径粒小于5微米。
本发明的一种高热稳定性和良好导热性的聚晶立方氮化硼复合片的生产方法，包括如下步骤：以80％-87％的镀镍立方氮化硼颗粒、1％-3％的铝粉、1％-3％的金属铌和1％-5％的碳化钒，余量为硅粉的配方准备原材料，将原材料混合在一起8-15小时，组装后，在90-100MPa和1400-1600℃的条件下，在缸径750的六面顶液压机中，合成高热稳定性和良好导热性的聚晶立方氮化硼复合片，合成时间30-50分钟。
采用本发明具有如下的有益效果：
1、采用高含量镀镍立方氮化硼颗粒和钨、钴、铝或铝陶瓷等结合剂所得的产品，镀镍立方氮化硼颗粒粒度大，导热率高，高浓度，断裂韧性和抗冲击性能优异且化学惰性高，在淬火钢、铸铁、碳素钢、模具钢等难削材料的高速精加工中具有更高的寿命和耐热性及热稳定性。
2、本发明采用钨、钴、铝等多元化触媒体系合成立方氮化硼晶体，可以增加体系的反应活性，促进立方氮化硼晶体的生长速度。
3、本发明采用多种触媒组合，可以生产多种颜色(不同等级)的立方氮化硼晶体。
4、本发明通过高温除杂，可有效保证立方氮化硼晶体的生长完整性。
具体实施方式
下面对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例1
本发明的一种高热稳定性和良好导热性的聚晶立方氮化硼复合片，包括如下步骤：以80％的镀镍立方氮化硼颗粒、1％的铝粉、3％的金属铌和5％的碳化钒，余量为硅粉的配方准备原材料，将原材料混合在一起8小时，组装后，在100MPa和1600℃的条件下，在缸径750的六面顶液压机中，合成高热稳定性和良好导热性的聚晶立方氮化硼复合片，合成时间30分钟。
其中，立镀镍立方氮化硼颗粒的径粒为2.5微米；铝粉的径粒为5微米。
上述生产方法，采用高含量镀镍立方氮化硼颗粒和钨、钴、铝或铝陶瓷等结合剂所得的产品，镀镍立方氮化硼颗粒粒度大，导热率高，高浓度，断裂韧性和抗冲击性能优异且化学惰性高，在淬火钢、铸铁、碳素钢、模具钢等难削材料的高速精加工中具有更高的寿命和耐热性及热稳定性。
实施例2
本发明的一种高热稳定性和良好导热性的聚晶立方氮化硼复合片，包括如下步骤：以82％的镀镍立方氮化硼颗粒、1.4％的铝粉、1.8％的金属铌和2.5％的碳化钒，余量为硅粉的配方准备原材料，将原材料混合在一起0111小时，组装后，在92MPa和1450℃的条件下，在缸径750的六面顶液压机中，合成高热稳定性和良好导热性的聚晶立方氮化硼复合片，合成时间40分钟。
其中，立镀镍立方氮化硼颗粒的径粒为3.5微米；铝粉的径粒为4.9微米。
上述生产方法，采用高含量镀镍立方氮化硼颗粒和钨、钴、铝或铝陶瓷等结合剂所得的产品，镀镍立方氮化硼颗粒粒度大，导热率高，高浓度，断裂韧性和抗冲击性能优异且化学惰性高，在淬火钢、铸铁、碳素钢、模具钢等难削材料的高速精加工中具有更高的寿命和耐热性及热稳定性。
实施例3
本发明的一种高热稳定性和良好导热性的聚晶立方氮化硼复合片，包括如下步骤：以84％的镀镍立方氮化硼颗粒、1.8％的铝粉、2.6％的金属铌和2％的碳化钒，余量为硅粉的配方准备原材料，将原材料混合在一起14小时，组装后，在94MPa和1540℃的条件下，在缸径750的六面顶液压机中，合成高热稳定性和良好导热性的聚晶立方氮化硼复合片，合成时间50分钟。
其中，立镀镍立方氮化硼颗粒的径粒为2微米；铝粉的径粒为3.9微米。
上述生产方法，采用高含量镀镍立方氮化硼颗粒和钨、钴、铝或铝陶瓷等结合剂所得的产品，镀镍立方氮化硼颗粒粒度大，导热率高，高浓度，断裂韧性和抗冲击性能优异且化学惰性高，在淬火钢、铸铁、碳素钢、模具钢等难削材料的高速精加工中具有更高的寿命和耐热性及热稳定性。
实施例4
本发明的一种高热稳定性和良好导热性的聚晶立方氮化硼复合片，包括如下步骤：以85％的镀镍立方氮化硼颗粒、2.2％的铝粉、2％的金属铌和3％的碳化钒，余量为硅粉的配方准备原材料，将原材料混合在一起15小时，组装后，在98MPa和1400℃的条件下，在缸径750的六面顶液压机中，合成高热稳定性和良好导热性的聚晶立方氮化硼复合片，合成时间35分钟。
其中，立镀镍立方氮化硼颗粒的径粒为2.8微米；铝粉的径粒为4.5微米。
上述生产方法，采用高含量镀镍立方氮化硼颗粒和钨、钴、铝或铝陶瓷等结合剂所得的产品，镀镍立方氮化硼颗粒粒度大，导热率高，高浓度，断裂韧性和抗冲击性能优异且化学惰性高，在淬火钢、铸铁、碳素钢、模具钢等难削材料的高速精加工中具有更高的寿命和耐热性及热稳定性。
实施例5
本发明的一种高热稳定性和良好导热性的聚晶立方氮化硼复合片，包括如下步骤：以87％的镀镍立方氮化硼颗粒、3％的铝粉、1％的金属铌和4％的碳化钒，余量为硅粉的配方准备原材料，将原材料混合在一起2111小时，组装后，在90MPa和1500℃的条件下，在缸径750的六面顶液压机中，合成高热稳定性和良好导热性的聚晶立方氮化硼复合片，合成时间45分钟。
其中，立镀镍立方氮化硼颗粒的径粒为3微米；铝粉的径粒为4微米。
上述生产方法，采用高含量镀镍立方氮化硼颗粒和钨、钴、铝或铝陶瓷等结合剂所得的产品，镀镍立方氮化硼颗粒粒度大，导热率高，高浓度，断裂韧性和抗冲击性能优异且化学惰性高，在淬火钢、铸铁、碳素钢、模具钢等难削材料的高速精加工中具有更高的寿命和耐热性及热稳定性。
应当理解，本文所述的示例性实施例是说明性的而非限制性的。尽管描述了本发明的一个或多个实施例，本领域普通技术人员应当理解，在不脱离通过所附权利要求所限定的本发明的精神和范围的情况下，可以做出各种形式和细节的改变。
Claims (4)
1.一种高热稳定性和良好导热性的聚晶立方氮化硼复合片，其特征在于，由下述原料制备而成：80％-87％的镀镍立方氮化硼颗粒、1％-3％的铝粉、1％-3％的金属铌和1％-5％的碳化钒，余量为硅粉。
2.根据权利要求1所述的高热稳定性和良好导热性的聚晶立方氮化硼复合片，其特征在于，所述镀镍立方氮化硼颗粒的径粒为2-4微米。
3.根据权利要求1所述的高热稳定性和良好导热性的聚晶立方氮化硼复合片，其特征在于，所述铝粉的径粒小于5微米。
4.一种高热稳定性和良好导热性的聚晶立方氮化硼复合片的生产方法，其特征在于，包括如下步骤：以80％-87％的镀镍立方氮化硼颗粒、1％-3％的铝粉、1％-3％的金属铌和1％-5％的碳化钒，余量为硅粉的配方准备原材料，将原材料混合在一起8-15小时，组装后，在90-100MPa和1400-1600℃的条件下，在缸径750的六面顶液压机中，合成高热稳定性和良好导热性的聚晶立方氮化硼复合片，合成时间30-50分钟。
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