放电等离子技术连接铬酸镧陶瓷  

Joining of Lanthanum Chromate Ceramics by Spark Plasma Technique

作　　者：董红英[1] 陈晓东[1] 贾朋伟 李建国[1,2] 朱力伟 马文 Dong Hongying;Chen Xiaodong;Jia Pengwei;Li Jianguo;Zhu Liwei;Ma Wen(Inner Mongolia University of Technology,Hohhot 010051,China;Inner Mongolia Key Laboratory of Thin Film and Coatings Technology,Hohhot 010051,China)

机构地区：[1]内蒙古工业大学,内蒙古呼和浩特010051 [2]内蒙古自治区薄膜与涂层重点实验室,内蒙古呼和浩特010051

出　　处：《稀有金属材料与工程》2020年第2期634-638,共5页Rare Metal Materials and Engineering

基　　金：内蒙古自然科学基金(2017MS0503);国家自然科学基金(51865044)。

摘　　要：铬酸镧陶瓷脆性高、难以变形,使其在加工上存在难度。利用陶瓷连接技术可以将小部件连接为大部件,实现低成本制造形状复杂的大型陶瓷构件。以铬酸镧的前驱体料浆作为中间层材料,利用放电等离子技术进行了铬酸镧陶瓷的连接,测定了连接件的连接强度,并借助SEM、EDS等手段分析了连接温度及保温时间对连接件强度的影响。结果表明,连接温度为1400℃时,连接件可以获得最高的连接强度,连接过程中母材中出现第二相Cr4O5。Lanthanum chromate ceramics with high brittleness,and difficult in deformation are difficult to process.Large ceramic components with complex shapes can be fabricated at low cost by ceramic joining technique.The lanthanum chromate precursor slurry was used as the interlayer material,and the lanthanum chromate ceramic was joined by spark plasma technique.Then the bonding strength of the joint was measured.The influence of joining temperature and holding time on the strength of the joint was analyzed by SEM,EDS,etc.The results show that the highest joining strength can be obtained at 1400℃,and the second phase Cr4O5 appears in the parent material during the joining process.

关 键 词：铬酸镧陶瓷 陶瓷连接 放电等离子技术 

分 类 号：TB34[一般工业技术—材料科学与工程] TQ174.758.11[化学工程—陶瓷工业]