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一、今天的陶瓷——金属结合技术陶瓷和金属的结合法从原理上可以分为以下四类: 1.机械结合法; 2.使用粘着剂的结合法; 3.采用金属喷镀的结合法; 4.固相或熔化状态下的直接结合法; 到目前为止,各类中已研制出的方法都非常多。其中,特别引人注目的是用作高温材料的陶瓷——金属结合法。在考虑结合材料于高温下使用时,当然最重要的特性是结合强度,此外还有抗热循环性和抗热冲击性。这表明陶瓷和金属在一般情况下有着不同的热膨胀系数,因温度变化,结合面上会出现变形,而且有时会导致陶瓷一侧产生致命性损伤。另外,由于二者的弹性模量不同,所以,一旦外部应力发生
First, today’s ceramic - metal bonding technology Ceramic and metal bonding method can in principle be divided into the following four categories: 1. Mechanical bonding method; 2. The use of adhesive bonding method; 3. The combination of metal spraying method ; 4. The direct binding method in the solid phase or in the melted state; so far, there have been many methods developed in all kinds. Of particular note is the ceramic-to-metal bonding method used as a high temperature material. The most important properties of course when considering the use of bonding materials at high temperatures are the bond strength, in addition to thermal cycling and thermal shock resistance. This shows that ceramics and metals, in general, have different coefficients of thermal expansion. As a result of temperature changes, deformations occur on the bond surfaces, which can sometimes cause fatal damage to the ceramic side. In addition, since the two have different elastic moduli, once external stress occurs