中文摘要：

采用座滴法研究了4种钎料Pd60Ni40，PdNi（3-6）V，PdNi（7-15）V和PdNi（16-24）Cr-（6-15）V（质量分数，％）在Si3N4陶瓷卜的润湿性．结果表明，在1250℃／30min的真空加热条件下，4种钎料均在Si3N4母材上润湿铺展，PdNi（16-24）Cr-（6-15）V钎料不但润湿角小，而且形成了无缺陷的润湿界面。该钎料与Si3N4形成的扩散反应层中，Cr和V优先与从母材扩散出的N反应生成相应的Cr-N和V-N相；只有少量的Si参与反应生成相应的Cr-Si和V-Si相；钎料基体区中主要是溶有少量Si的PdNi固溶体以及PdSi和Ni-Si相。Cr相对于V更容易向界面扩散。

英文摘要：

The wetting behaviors of Pd60-Ni40, PdNi （3--6）V, PdNi-（7--15）V and PdNi- （16 24）Cr-（6 15）V （mass fraction, %） on Si3N4 were studied by the sessile drop method. The results showed that on the condition heating at 1250℃ for 30 min in vacuum, small contact angle and excellent interface were obtained using PdNi （16 24）Cr （6--15）V brazing filler. In the interracial layer with this brazing filler, elements Cr and V preferentially diffused to SiaN4 and resulted in the reaction products of Cr N and V-N phases. A small amount of element Si reacted with elements Cr and V and formed Cr Si and V-Si phases. The matrix of filler metal is composed of Pd Ni solid solution with some element Si, Pd Si and Ni-Si phases. When elements Cr and V were added concurrently in the brazing filler, the former diffused to the reaction layer more strongly than the latter.