CN114620996A - 一种高效太阳能电池用旋转陶瓷靶材 - Google Patents
一种高效太阳能电池用旋转陶瓷靶材 Download PDFInfo
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- CN114620996A CN114620996A CN202210165564.5A CN202210165564A CN114620996A CN 114620996 A CN114620996 A CN 114620996A CN 202210165564 A CN202210165564 A CN 202210165564A CN 114620996 A CN114620996 A CN 114620996A
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- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910003437 indium oxide Inorganic materials 0.000 claims abstract description 11
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- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 10
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Abstract
本发明公开了一种高效太阳能电池用旋转陶瓷靶材,所述陶瓷靶材的组份为97‑98wt%的氧化铟以及0.5‑2wt%的氧化锡和1‑2.5wt%的掺杂氧化物;所述掺杂氧化物为氧化钛、氧化钨、氧化钼、氧化锆、氧化铈、氧化硅中的3‑5种。本发明采用多元素的掺杂并配合特定的烧结温度制度,可有效实现较高的靶材密度,改善连续溅射过程中靶材表面产生节瘤的问题。本发明可有效提高薄膜在红外波段的透光率,进而提高太阳能电池红外波段的光电转换能力。
Description
技术领域
本发明属于真空镀膜靶材技术领域,具体涉及一种高效太阳能电池用旋转陶瓷靶材。
背景技术
在太阳能电池光伏领域,为提高太阳能电池的光电转换效率,需要利用好红外波段的太阳光能量,需要在红外波段具有较高透光率的透明导电氧化物(TCO)薄膜。提高TCO薄膜红外波段的透光率需要降低薄膜的电子浓度,但为了保证优良的导电性,则需要通过提高薄膜的电子迁移率来降低电阻率(方块电阻)。
传统ITO靶材由于SnO2含量高,载流子浓度高,导致电子迁移率低。降低SnO2含量时,如添加在1%到5%范围内时,载流子浓度略有降低,电子迁移率略有提高。但是,迁移率还是不够高,导致薄膜的导电性会略有降低。更为重要的是难以烧制超高密度的靶材,使得靶材在连续使用过程中容易产生表面节瘤,进而影响薄膜的质量和连续生产。
发明内容
针对现有技术的不足,本发明提供了一种高效太阳能电池用旋转陶瓷靶材,利用独特的靶材组成和烧结工艺,获得一种高电子迁移率、高红外透光率且超高密度的陶瓷靶材,可提高太阳能电池的转化效率,且适合规模生产。
本发明提供的陶瓷靶材,主要成份为In2O3,次要成份为SnO2,并含有氧化钛、氧化钨、氧化钼、氧化锆、氧化铈、氧化硅中的3-5种组成的掺杂氧化物。In2O3含量为97-98wt%,SnO2含量为0.5-2.0wt%,掺杂氧化物含量为1.0-2.5wt%。
本发明提供的陶瓷靶材,其制备方法包括以下步骤:
(1)按比例分别称取氧化铟粉体、氧化锡粉体和掺杂氧化物粉体。
(2)加入去离子水、分散剂,先粗磨再细磨,获得混合均匀且分散性好的浆料。
(3)经研磨后的浆料添加聚乙烯醇粘接剂,使用喷雾干燥机进行喷雾造粒。
(4)造粒粉体装入胶套模具中,采用冷等静压机压制得到靶材素坯。
(5)对素坯采用特定的升温工艺进行烧结,获得高密度旋转陶瓷靶材。
本发明烧结工艺的温度制度特点在于从室温开始,升温到最高温1550℃阶段没有保温过程,共设置7个升温阶段,其温度区间和升温速度分别为:室温-120℃(1℃/min)、120-400℃(0.8℃/min)、400-750℃(0.5℃/min)、750-1000℃(1℃/min)、1000-1150℃(0.5℃/min)、1150-1300(2℃/min)、1300℃-1550℃(0.2℃/min)。到达1550℃后以10℃/min的速度先降温到1520℃并保温5-10h,再以同样速度降温到1490℃并保温15-25h,以对靶材内部微观组织进行调整。随后开始降温,在1490-1000℃区间的降温速度为0.6℃/min,然后关闭热源自然降温。
陶瓷靶材通常都是在纯氧气氛下烧结,本发明烧结工艺的另一个特点是不要求完全纯氧气氛烧结:烧结时,升温到300℃后开始通入净化的空气,持续升温到1000℃时再切换为纯氧气,氧气通入直至降温到1300℃时停止。
本发明的技术特点及有益效果:
1.本发明可有效提高薄膜在红外波段的透光率,进而提高太阳能电池红外波段的光电转换能力,并且有利于降低电子浓度,提高其迁移率,在提高红外透光率的同时保持较好的导电性。
2.本发明可有效改善单一元素的掺杂设计难以兼顾的靶材可量产制造,如致密度、组分均匀性、电阻率等问题。
3.本发明采用多元素的掺杂并配合特定的烧结温度制度,可有效实现较高的靶材密度,改善连续溅射过程中靶材表面产生节瘤的问题。
附图说明
图1是本发明实施例中压制靶材素坯所使用的胶套模具示意图;
图2是本发明实施例1得到的靶材照片。
具体实施方式
下面给出具体的实施例,用以详细说明本发明的技术方案和有益效果。
实施例1:
(1)分别称取氧化铟粉9.7kg,氧化锡粉0.2kg,氧化钨粉0.03kg,氧化铈粉0.05kg,氧化锆粉0.02kg,与超纯水按照55%的固含量进行均匀混合,外加0.3%的分散剂。先用1-2mm的锆球在砂磨机中粗磨2h,然后用0.3-0.5mm的锆球在砂磨机中细磨6h,研磨腔为聚氨酯材质。以上制浆工艺重复3次,然后混合在一起后添加粘接剂和喷雾造粒。
(2)三次混合浆料加入聚乙烯醇混合溶液,添加量以纯聚乙烯醇物质计算为2.5%,消泡剂则按照溶液质量计算为0.06%,然后200目过筛浆料,进行脱泡和除杂处理。
(3)使用喷雾干燥机进行造粒,设置进、出口温度参数分别为200℃和100℃,转速为11000rpm,进料频率为15,造粒粉体用80目过筛去除粗颗粒,其松装密度为1.57g/cm3。
(4)平面靶材成型时,将造粒粉体置于300×300mm的钢模中50MPa干压预成型,预成型的素坯用橡胶袋抽真空进行防水包装;旋转靶材成型时,将造粒粉体置于模芯为不锈钢、外套为橡胶的模具中,两头用橡胶塞密封并机械固定;同时在240MPa冷等静压成型并保压12min,获得高密度的素坯。
(5)平面和旋转素坯置入烧结炉烧结,温度区间和升温速度如下:室温-120℃(1℃/min)、120-400℃(0.8℃/min)、400-750℃(0.5℃/min)、750-1000℃(1℃/min)、1000-1150℃(0.5℃/min)、1150-1300(2℃/min)、1300℃-1550℃(0.2℃/min)。到达1550℃后以10℃/min的降温速率先降温到1520℃并保温5h,再降温到1490℃并保温15h,以对靶材内部微观组织进行调整。随后继续降温,在1490-1000℃区间的降温速率为0.6℃/min,然后断电自然降温。
烧结气氛:升温到300℃后开始通入空气,升温到1000℃时通入纯氧气,烧结结束并降温到1300℃时停止通入氧气,此气氛制度利于降低生产成本。
对靶材进行密度测试,以及磁控溅射制备的薄膜进行电子迁移率测试,其测试结果如表1所示。旋转靶材经过内、外圆磨及切割端头获得300mm长的旋转靶材,经阿基米德排水法测试其相对密度为98.9%。
将得到的平面靶材进行机加工和绑定制成直径为6英寸的溅射靶材,在直流磁控溅射***中进行镀膜,基材为0.7mm厚的康宁玻璃,溅射气体为氩气,工作气体为氧气(不引入水蒸气或氢气),在优化的工艺条件下制备的薄膜的电子迁移率为40.56cm2/V·s。
实施例2:
(1)分别称取氧化铟粉9.7kg,氧化锡粉0.05kg,氧化钨粉0.05kg,氧化铈粉0.05kg,氧化锆粉0.15kg,与超纯水按照65%的固含量进行均匀混合,外加0.8%的分散剂。先用1-2mm的锆球在砂磨机中粗磨2h,然后用0.3-0.5mm的锆球在砂磨机中细磨6h,研磨腔为聚氨酯材质。以上制浆工艺重复3次,然后混合在一起后添加粘接剂和喷雾造粒。
(2)三次混合浆料加入聚乙烯醇混合溶液,添加量以纯聚乙烯醇物质计算为0.5%,消泡剂则按照溶液质量计算为0.03%,然后200目过筛浆料,进行脱泡和除杂处理。
(3)使用喷雾干燥机进行造粒,设置进、出口温度参数分别为200℃和100℃,转速为11000rpm,进料频率为15,造粒粉体用80目过筛去除粗颗粒,其松装密度为1.61g/cm3。
(4)平面靶材成型时,将造粒粉体置于300×300mm的钢模中50MPa干压预成型,预成型的素坯用橡胶袋抽真空进行防水包装;旋转靶材成型时,将造粒粉体置于模芯为不锈钢、外套为橡胶的模具中,两头用橡胶塞密封并机械固定;同时在300MPa冷等静压成型并保压12min,获得高密度的素坯。
(5)平面和旋转素坯置入烧结炉烧结,温度区间和升温速度如下:室温-120℃(1℃/min)、120-400℃(0.8℃/min)、400-750℃(0.5℃/min)、750-1000℃(1℃/min)、1000-1150℃(0.5℃/min)、1150-1300(2℃/min)、1300℃-1550℃(0.2℃/min)。到达1550℃后以10℃/min的降温速率先降温到1520℃并保温5h,再降温到1490℃并保温15h,以对靶材内部微观组织进行调整。随后继续降温,在1490-1000℃区间的降温速率为0.6℃/min,然后停电自然降温。
烧结气氛:升温到300℃后开始通入空气,升温到1000℃时通入纯氧气,烧结结束并降温到1300℃时停止通入氧气,此气氛制度利于降低生产成本。
对靶材进行密度测试,以及磁控溅射制备的薄膜进行电子迁移率测试,其测试结果如表1所示。旋转靶材经过内、外圆磨及切割端头获得300mm长的旋转靶材,经阿基米德排水法测试其相对密度为98.6%。
将得到的平面靶材进行机加工和绑定制成直径为6英寸的溅射靶材,在直流磁控溅射***中进行镀膜,基材为0.7mm厚的康宁玻璃,溅射气体为氩气,工作气体为氧气(不引入水蒸气或氢气),在优化的工艺条件下制备的薄膜的电子迁移率为50.23cm2/V·s。
实施例3:
(1)分别称取氧化铟粉9.7kg,氧化锡粉0.1kg,氧化钼粉0.05kg,氧化钛粉0.05kg,氧化锆粉0.1kg,与超纯水按照60%的固含量进行均匀混合,外加0.6%的分散剂。先用1-2mm的锆球在砂磨机中粗磨2h,然后用0.3-0.5mm的锆球在砂磨机中细磨6h,研磨腔为聚氨酯材质。以上制浆工艺重复3次,然后混合在一起后添加粘接剂和喷雾造粒。
(2)三次混合浆料加入聚乙烯醇混合溶液,添加量以纯聚乙烯醇物质计算为1.2%,消泡剂则按照溶液质量计算为0.05%,然后200目过筛浆料,进行脱泡和除杂处理。
(3)使用喷雾干燥机进行造粒,设置进、出口温度参数分别为200℃和100℃,转速为11000rpm,进料频率为15,造粒粉体用80目过筛去除粗颗粒,其松装密度为1.56g/cm3。
(4)平面靶材成型时,将造粒粉体置于300×300mm的钢模中50MPa干压预成型,预成型的素坯用橡胶袋抽真空进行防水包装;旋转靶材成型时,将造粒粉体置于模芯为不锈钢、外套为橡胶的模具中,两头用橡胶塞密封并机械固定;同时在300MPa冷等静压成型并保压12min,获得高密度的素坯。
(5)平面和旋转素坯置入烧结炉烧结,温度区间和升温速度如下:室温-120℃(1℃/min)、120-400℃(0.8℃/min)、400-750℃(0.5℃/min)、750-1000℃(1℃/min)、1000-1150℃(0.5℃/min)、1150-1300(2℃/min)、1300℃-1550℃(0.2℃/min)。到达1550℃后以10℃/min的降温速率先降温到1520℃并保温5h,再降温到1490℃并保温15h,以对靶材内部微观组织进行调整。随后继续降温,在1490-1000℃区间的降温速率为0.6℃/min,然后停电自然降温。
烧结气氛:升温到300℃后开始通入空气,升温到1000℃时通入纯氧气,烧结结束并降温到1300℃时停止通入氧气,此气氛制度利于降低生产成本。
对靶材进行密度测试,以及磁控溅射制备的薄膜进行电子迁移率测试,其测试结果如表1所示。旋转靶材经过内、外圆磨及切割端头获得300mm长的旋转靶材,经阿基米德排水法测试其相对密度为99.2%。
将得到的平面靶材进行机加工和绑定制成直径为6英寸的溅射靶材,在直流磁控溅射***中进行镀膜,基材为0.7mm厚的康宁玻璃,溅射气体为氩气,工作气体为氧气(不引入水蒸气或氢气),在优化的工艺条件下制备的薄膜的电子迁移率为60.12cm2/V·s。
实施例4:
(1)分别称取氧化铟粉9.75kg,氧化锡粉0.15kg,氧化钼粉0.03kg,氧化钛粉0.05kg,氧化锆粉0.02kg,与超纯水按照65%的固含量进行均匀混合,外加0.8%的分散剂。先用1-2mm的锆球在砂磨机中粗磨2h,然后用0.3-0.5mm的锆球在砂磨机中细磨6h,研磨腔为聚氨酯材质。以上制浆工艺重复3次,然后混合在一起后添加粘接剂和喷雾造粒。
(2)三次混合浆料加入聚乙烯醇混合溶液,添加量以纯聚乙烯醇物质计算为0.5%,消泡剂则按照溶液质量计算为0.03%,然后200目过筛浆料,进行脱泡和除杂处理。
(3)使用喷雾干燥机进行造粒,设置进、出口温度参数分别为200℃和100℃,转速为11000rpm,进料频率为15,造粒粉体用80目过筛去除粗颗粒,其松装密度为1.61g/cm3。
(4)平面靶材成型时,将造粒粉体置于300×300mm的钢模中50MPa干压预成型,预成型的素坯用橡胶袋抽真空进行防水包装;旋转靶材成型时,将造粒粉体置于模芯为不锈钢、外套为橡胶的模具中,两头用橡胶塞密封并机械固定;同时在300MPa冷等静压成型并保压12min,获得高密度的素坯。
(5)平面和旋转素坯置入烧结炉烧结,温度区间和升温速度如下:室温-120℃(1℃/min)、120-400℃(0.8℃/min)、400-750℃(0.5℃/min)、750-1000℃(1℃/min)、1000-1150℃(0.5℃/min)、1150-1300(2℃/min)、1300℃-1550℃(0.2℃/min)。到达1550℃后以10℃/min的降温速率先降温到1520℃并保温5h,再降温到1490℃并保温15h,以对靶材内部微观组织进行调整。随后继续降温,在1490-1000℃区间的降温速率为0.6℃/min,然后停电自然降温。
烧结气氛:升温到300℃后开始通入空气,升温到1000℃时通入纯氧气,烧结结束并降温到1300℃时停止通入氧气,此气氛制度利于降低生产成本。
对靶材进行密度测试,以及磁控溅射制备的薄膜进行电子迁移率测试,其测试结果如表1所示。旋转靶材经过内、外圆磨及切割端头获得300mm长的旋转靶材,经阿基米德排水法测试其相对密度为99.1%。
将得到的平面靶材进行机加工和绑定制成直径为6英寸的溅射靶材,在直流磁控溅射***中进行镀膜,基材为0.7mm厚的康宁玻璃,溅射气体为氩气,工作气体为氧气(不引入水蒸气或氢气),在优化的工艺条件下制备的薄膜的电子迁移率为51.24cm2/V·s。
实施例5:
(1)分别称取氧化铟粉9.75kg,氧化锡粉0.1kg,氧化钼粉0.1kg,氧化钛粉0.025kg,氧化铈粉0.02kg,氧化硅粉0.005kg,与超纯水按照60%的固含量进行均匀混合,外加0.6%的分散剂。先用1-2mm的锆球在砂磨机中粗磨2h,然后用0.3-0.5mm的锆球在砂磨机中细磨6h,研磨腔为聚氨酯材质。以上制浆工艺重复3次,然后混合在一起后添加粘接剂和喷雾造粒。
(2)三次混合浆料加入聚乙烯醇混合溶液,添加量以纯聚乙烯醇物质计算为1.0%,消泡剂则按照溶液质量计算为0.04%,然后200目过筛浆料,进行脱泡和除杂处理。
(3)使用喷雾干燥机进行造粒,设置进、出口温度参数分别为200℃和100℃,转速为11000rpm,进料频率为15,造粒粉体用80目过筛去除粗颗粒,其松装密度为1.57g/cm3。
(4)平面靶材成型时,将造粒粉体置于300×300mm的钢模中50MPa干压预成型,预成型的素坯用橡胶袋抽真空进行防水包装;旋转靶材成型时,将造粒粉体置于模芯为不锈钢、外套为橡胶的模具中,两头用橡胶塞密封并机械固定;同时在300MPa冷等静压成型并保压12min,获得高密度的素坯。
(5)平面和旋转素坯置入烧结炉烧结,温度区间和升温速度如下:室温-120℃(1℃/min)、120-400℃(0.8℃/min)、400-750℃(0.5℃/min)、750-1000℃(1℃/min)、1000-1150℃(0.5℃/min)、1150-1300(2℃/min)、1300℃-1550℃(0.2℃/min)。到达1550℃后以10℃/min的降温速率先降温到1520℃并保温5h,再降温到1490℃并保温15h,以对靶材内部微观组织进行调整。随后继续降温,在1490-1000℃区间的降温速率为0.6℃/min,然后停电自然降温。
烧结气氛:升温到300℃后开始通入空气,升温到1000℃时通入纯氧气,烧结结束并降温到1300℃时停止通入氧气,此气氛制度利于降低生产成本。
对靶材进行密度测试,以及磁控溅射制备的薄膜进行电子迁移率测试,其测试结果如表1所示。旋转靶材经过内、外圆磨及切割端头获得300mm长的旋转靶材,经阿基米德排水法测试其相对密度为99.3%。
将得到的平面靶材进行机加工和绑定制成直径为6英寸的溅射靶材,在直流磁控溅射***中进行镀膜,基材为0.7mm厚的康宁玻璃,溅射气体为氩气,工作气体为氧气(不引入水蒸气或氢气),在优化的工艺条件下制备的薄膜的电子迁移率为48.69cm2/V·s。
实施例6:
(1)分别称取氧化铟粉9.75kg,氧化锡粉0.1kg,氧化钨粉0.03kg,氧化钼粉0.03kg,氧化铈粉0.04kg,氧化锆粉0.05kg,与超纯水按照60%的固含量进行均匀混合,外加0.6%的分散剂。先用1-2mm的锆球在砂磨机中粗磨2h,然后用0.3-0.5mm的锆球在砂磨机中细磨6h,研磨腔为聚氨酯材质。以上制浆工艺重复3次,然后混合在一起后添加粘接剂和喷雾造粒。靶材的其他加工过程与实施例5相同。
旋转靶材经过内、外圆磨及切割端头获得300mm长的旋转靶材,经阿基米德排水法测试其相对密度为98.7%。
将得到的平面靶材进行机加工和绑定制成直径为6英寸的溅射靶材,在直流磁控溅射***中进行镀膜,基材为0.7mm厚的康宁玻璃,溅射气体为氩气,工作气体为氧气(不引入水蒸气或氢气),在优化的工艺条件下制备的薄膜的电子迁移率为53.34cm2/V·s。
实施例7:
(1)分别称取氧化铟粉9.8kg,氧化锡粉0.1kg,氧化钨粉0.03kg,氧化铈粉0.03kg,氧化锆粉0.03kg,氧化硅粉0.005kg,氧化钛0.005kg,与超纯水按照60%的固含量进行均匀混合,外加0.6%的分散剂。先用1-2mm的锆球在砂磨机中粗磨2h,然后用0.3-0.5mm的锆球在砂磨机中细磨6h,研磨腔为聚氨酯材质。以上制浆工艺重复3次,然后混合在一起后添加粘接剂和喷雾造粒。靶材的其他加工过程与实施例5相同。
旋转靶材经过内、外圆磨及切割端头获得300mm长的旋转靶材,经阿基米德排水法测试其相对密度为99%。
将得到的平面靶材进行机加工和绑定制成直径为6英寸的溅射靶材,在直流磁控溅射***中进行镀膜,基材为0.7mm厚的康宁玻璃,溅射气体为氩气,工作气体为氧气(不引入水蒸气或氢气),在优化的工艺条件下制备的薄膜的电子迁移率为49.23cm2/V·s。
实施例8:
(1)分别称取氧化铟粉9.8kg,氧化锡粉0.1kg,氧化钼粉0.02kg,氧化铈粉0.02kg,氧化锆粉0.05kg,氧化硅粉0.002kg,氧化钛0.008kg,与超纯水按照60%的固含量进行均匀混合,外加0.6%的分散剂。先用1-2mm的锆球在砂磨机中粗磨2h,然后用0.3-0.5mm的锆球在砂磨机中细磨6h,研磨腔为聚氨酯材质。以上制浆工艺重复3次,然后混合在一起后添加粘接剂和喷雾造粒。靶材的其他加工过程与实施例5相同。
旋转靶材经过内、外圆磨及切割端头获得300mm长的旋转靶材,经阿基米德排水法测试其相对密度为99%。
将得到的平面靶材进行机加工和绑定制成直径为6英寸的溅射靶材,在直流磁控溅射***中进行镀膜,基材为0.7mm厚的康宁玻璃,溅射气体为氩气,工作气体为氧气(不引入水蒸气或氢气),在优化的工艺条件下制备的薄膜的电子迁移率为50.57cm2/V·s。
对比例1:
外购成分比为90/10的ITO靶材,相对密度为99.6%,直径为6英寸。在直流磁控溅射***中进行镀膜,基材为0.7mm厚的康宁玻璃,溅射气体为氩气,工作气体为氧气(不引入水蒸气或氢气),在优化的工艺条件下制备的薄膜的电子迁移率为14.78cm2/V·s。
对比例2:
外购成分比为97/3的ITO靶材,相对密度为98.4%直径为6英寸。在直流磁控溅射***中进行镀膜,基材为0.7mm厚的康宁玻璃,溅射气体为氩气,工作气体为氧气(不引入水蒸气或氢气),在优化的工艺条件下制备的薄膜的电子迁移率为25.66cm2/V·s。
下表是所有实施例和对比例的实验数据。
从表中看出,本发明相对于对比例,靶材的电子迁移率和相对密度都获得显著提高,可以提高磁控溅射薄膜太阳能电池的转化效率,同时降低在溅射过程中的表面节瘤中毒现象。
Claims (3)
1.一种高效太阳能电池用旋转陶瓷靶材,其特征在于,所述陶瓷靶材的组份为97-98wt%的氧化铟以及0.5-2wt%的氧化锡和1-2.5wt%的掺杂氧化物;所述掺杂氧化物为氧化钛、氧化钨、氧化钼、氧化锆、氧化铈、氧化硅中的3-5种。
2.根据权利要求1所述的陶瓷靶材,其特征在于,所述陶瓷靶材的制备方法包括:
将成型后的陶瓷靶材素坯置于烧结炉中烧结,其烧结温度制度如下:
(1)第一温度区间:室温-120℃,升温速度1℃/min;
(2)第二温度区间:120-400℃,升温速度0.8℃/min;
(3)第三温度区间:400-750℃,升温速度0.5℃/min;
(4)第四温度区间:750-1000℃,升温速度1℃/min;
(5)第五温度区间:1000-1150℃,升温速度0.5℃/min;
(6)第六温度区间:1150-1300℃,升温速度2℃/min;
(7)第七温度区间:1300-1550℃,升温速度0.2℃/min;
(8)第八温度区间:到达最高温度1550℃后以10℃/min的降温速度先降温到1520℃并保温5-10h,再以同样速度降温到1490℃并保温15-25h;
(9)第九温度区间:1490-1000℃,降温速度0.6℃/min;
(10)第十温度区间:1000℃-室温,关闭热源自然降温。
3.根据权利要求2所述的陶瓷靶材,其特征在于,所述制备方法中,将成型后的陶瓷靶材素坯置于烧结炉中烧结,升温到300℃后开始通入净化空气,温度达到1000℃时切换为纯氧气,纯氧气通入直至降温到1300℃停止。
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