论文部分内容阅读
蓝宝石是氧化鋁单晶体組成的。它具有耐蝕性强,热电阻高,强度特別大以及优良的电气特性和导热性能。蓝宝石和金属的封接是极其困难的。本文作者鑑于对利用蓝宝石和扩大蓝宝石应用的要求,将蓝宝石和钛金属采用活性合金封接法(以钛-鎳合金作焊剂)进行封接,并且用光学显微鏡,电子显微鏡和X射綫微型解析器进行了观察和检查。其結論如下: (1) 采用活性合金法(以钛-鎳合金为焊剂)可以使蓝宝石与钛达到真空气密封接; (2) 封接表面是平整的,但也要稍微有点粗糙度,可以获得良好的真空气密性和封接强度; (3) 蓝宝石和钛金属封接部件中。观察到了五层界面层,这些层中鋁、氧、钛和鎳元素具有特殊的分布。特別是钛金属选择性地吸附在蓝宝石和金属界面間,而且在那里钛的浓度大于鎳的浓度; (4) 在蓝宝石和金属界面上,主要形成固溶体层或钛-鎳-氧化合物,而且在蓝宝石和金属界面間的粘結是很完整的。
Sapphire is composed of single crystals of alumina. It has strong corrosion resistance, high thermal resistance, strength and special large and excellent electrical properties and thermal conductivity. Sealing of sapphire and metal is extremely difficult. In response to the demand for sapphire use and sapphire expansion, the authors sealed the sapphire and titanium by the active alloy sealing method (using a titanium-nickel alloy as a flux), and observed them by light microscopy, electron microscopy and X-ray micro-parser was observed and examined. The conclusions are as follows: (1) The active alloy method (titanium-nickel alloy for the flux) can make the sapphire and titanium to vacuum airtight seal; (2) the sealing surface is flat, but also a little rough, you can Get a good vacuum tightness and sealing strength; (3) sapphire and titanium sealing parts. Five interfacial layers were observed, and the aluminum, oxygen, titanium and nickel elements in these layers have a special distribution. In particular, titanium is selectively adsorbed between the sapphire and the metal interface, and where the concentration of titanium is greater than the concentration of nickel; (4) At sapphire and metal interfaces, predominantly solid solution layers or titanium-nickel-oxygen compounds are formed, The bonding between the sapphire and the metal interface is complete.