真空蒸发镀钨金刚石制备工艺及其抗氧化性能研究
|
摘要
采用真空蒸发镀的方法在金刚石表面镀钨,研究了镀覆温度和保温时间对金刚石表面形貌、镀层成分与厚度、镀钨层物相的影响规律,分析了镀钨金刚石的抗氧化性能。结果表明,随着镀覆温度和保温时间的增加,钨元素百分比含量增加,镀层厚度也逐渐增加,镀层由间断变成连续致密的镀膜,并逐渐生成W2C和WC。镀钨后的金刚石抗氧化性提高,在900℃下保温1h的镀钨金刚石起始氧化温度、剧烈氧化温度比未镀钨的金刚石分别提高了18.8%、16.6%。
Diamond grits were coated with tungsten by vacuum evaporating.The Effect of coating temperature and holding time on the surface morphology,coating's composition,and thickness has been investigated.The oxidation resistance of coating was also analyzed.Results show that content and thickness of tungsten coat could be increased with higher coating temperature and longer holding time,and a continuous film contained with W2 C and WC was gradually formed.At at 900℃for one hour,the incipient oxidation temperature and the acute temperature of coated diamond grits with tungsten are higher 18.8%and16.6%respectively than the ones of the uncoated.
Diamond grits were coated with tungsten by vacuum evaporating.The Effect of coating temperature and holding time on the surface morphology,coating's composition,and thickness has been investigated.The oxidation resistance of coating was also analyzed.Results show that content and thickness of tungsten coat could be increased with higher coating temperature and longer holding time,and a continuous film contained with W2 C and WC was gradually formed.At at 900℃for one hour,the incipient oxidation temperature and the acute temperature of coated diamond grits with tungsten are higher 18.8%and16.6%respectively than the ones of the uncoated.
引文
[1]方莉俐,郑莲,吴艳飞,等.人造金刚石表面化学镀镍工艺[J].人工晶体学报,2013,42(9):1871-1874.
[2]桂阳海,牛连杰,韩勤会,等.超硬磨料表面处理研究进展[J].电镀与涂饰,2010,29(7):38-42.
[3]汤小文.人造金刚石盐浴渗钛[J].金属热处理,1999(5):22,27.
[4]龙涛,董应虎,张瑞卿,等.金刚石表面金属化可控Cr层的形成机制及性能[J].材料热处理学报,2015,36(1):132-137.
[5]梁宝岩,张旺玺,史冬丽,等.SHS技术在金刚石表面镀覆NiTiC复合涂层的研究[J].金刚石与磨料磨具工程,2016,36(3):50-53.
[6]向波,谢志刚,贺跃辉,等.金刚石表面镀覆金属钨的新方法[J].中国有色金属学报,2007(9):1511-1515.
[7]李宾华,张迎九.金刚石表面扩散镀钨的研究[J].金刚石与磨料磨具工程,2015,35(1):17-20.
[8]张纯,王日初,彭超群,等.表面镀钨层对金刚石/铜复合材料热导率的影响[J].稀有金属材料与工程,2016,45(10):2692-2696.
[2]桂阳海,牛连杰,韩勤会,等.超硬磨料表面处理研究进展[J].电镀与涂饰,2010,29(7):38-42.
[3]汤小文.人造金刚石盐浴渗钛[J].金属热处理,1999(5):22,27.
[4]龙涛,董应虎,张瑞卿,等.金刚石表面金属化可控Cr层的形成机制及性能[J].材料热处理学报,2015,36(1):132-137.
[5]梁宝岩,张旺玺,史冬丽,等.SHS技术在金刚石表面镀覆NiTiC复合涂层的研究[J].金刚石与磨料磨具工程,2016,36(3):50-53.
[6]向波,谢志刚,贺跃辉,等.金刚石表面镀覆金属钨的新方法[J].中国有色金属学报,2007(9):1511-1515.
[7]李宾华,张迎九.金刚石表面扩散镀钨的研究[J].金刚石与磨料磨具工程,2015,35(1):17-20.
[8]张纯,王日初,彭超群,等.表面镀钨层对金刚石/铜复合材料热导率的影响[J].稀有金属材料与工程,2016,45(10):2692-2696.