The correlativity between neutral salt spray accelerated test and atmospheric corrosion test in Shijiazhuang was studied by the mass loss determination of 45 steel, A3 steel, 20 steel and gun steel.
以45钢、A3钢、炮钢、20钢为金属试样，研究它们在中性盐雾加速试验及石家庄大气环境暴露试验中腐蚀失重与时间的变化规律。
The result shows that in the ring-block sliding wear test, with time prolonging, the friction coefficient of all samples becomes more and more stable, and the mass wear loss increases.
结果表明：在环-块滑动摩擦实验中，随时间延长，试样摩擦系数均趋向平稳，质量磨损量均增长。
Polarization curve and neutral atmosphere salt corrosion test showed that the corrosion resistant property of BT20 Ti alloy is excellent, and mass loss of both is not obvious.
极化曲线和中性盐雾腐蚀实验表明：钛合金耐腐蚀性能良好，腐蚀失重不明显。
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