To improve the performance of impregnated diamond bit in saline drilling fluid, the effects of benzotriazole and imidazoline on the abrasion–corrosion behaviors of a hot-pressed WC-based material and its binder material in saline silica slurries were investigated with a modified abrasion test rig. The morphology of worn surface and corrosion products after tribocorrosion test were analyzed by scanning electron microscopy and Raman spectroscopy, respectively. The results indicated that benzotriazole was a better corrosion inhibitor for the two hot-pressed materials than imidazoline. In abrasion-corrosion tests, the addition of benzotriazole into saline slurry reduced the total weight loss considerably and produced a negative abrasion–corrosion synergy, while imidazoline had hardly noticeable effects, especially to the binder material. The negative synergy could be related to the change in contact condition between abrasive particles and worn surface, owing to the decrease in the adsorption of benzotriazole on the worn surface as a result of cathodic protection. By lowering the corrosion rate of the binder around WC particles and thus lessening the undermining of WC particles, benzotriazole significantly improved the anti-tribocorrosion performance of the WC-based material.

为了提高含盐金刚石钻头在盐水钻井液中的性能，使用改进的磨蚀试验台研究了苯并三唑和咪唑啉对热压WC基材料及其粘合剂材料在含盐二氧化硅泥浆中的磨损-腐蚀行为的影响。 。摩擦腐蚀试验后的磨损表面和腐蚀产物的形态分别通过扫描电子显微镜和拉曼光谱分析。结果表明，苯并三唑对这两种热压材料比咪唑啉具有更好的缓蚀性能。在磨损腐蚀试验中，在盐水浆液中添加苯并三唑可显着减少总重量损失，并产生负的磨损腐蚀协同作用，而咪唑啉几乎没有明显的作用，特别是对粘合剂材料。负协同作用可能与磨料颗粒与磨损表面之间接触条件的变化有关，这是由于阴极保护导致苯并三唑在磨损表面上的吸附减少。通过降低WC颗粒周围粘合剂的腐蚀速率，从而减少WC颗粒的破坏，苯并三唑显着提高了WC基材料的抗摩擦腐蚀性能。