2作為觸頭材料的添加劑，采用粉末冶金法制備了6種不同第二相（SnO2）粒度的AgSnO2和AgSnO2/TiO2觸頭材料。研究了2種觸頭材料的潤(rùn)濕性和電接觸性能。用座滴法測(cè)量了Ag與SnO2之間的潤(rùn)濕角，并表征了材料的濕潤(rùn)性，使用JF04C電接觸觸頭材料測(cè)試系統(tǒng)對(duì)材料電接觸性能進(jìn)行了測(cè)試，分析了不同第二相粒度的觸頭材料的潤(rùn)濕性和電接觸性能的變化規(guī)律。結(jié)果表明，當(dāng)?shù)诙嗔６葹?00~300 nm時(shí)，2種觸頭材料的性能均優(yōu)于其它粒度的觸頭材料。;TiO2 was selected as the additive of the contact material, and AgSnO2 and AgSnO2/TiO2 contact materials with six different particle sizes of second phase (SnO2) were prepared by powder metallurgy. The wettability and electrical contact properties of both contact materials were studied. The wetting angle between Ag and SnO2 was measured by the sessile drop method, and the wettability was characterized. The JF04C electrical contact material testing system was used to test the electrical contact properties, and the change laws of wettability and electrical contact performance of contact materials with different particle sizes of second phase were analyzed. The results show that the properties of the two contact materials with the particle size of second phase ranging in 100~300 nm are better than those with other particle sizes."/>