钕铁硼材料中含有大量的钕和铁,其特性硬而脆、容易生锈氧化,所以对其表面通常作电镀处理,如镀锌、镍、银、金等,也可以做磷化处理或喷环氧树脂来减慢其氧化速度。 |
烧结钕铁硼镀层说明 Available Coatings Of Sintered NdFeB Magnets | |||||
镀层类型 Coating | 镀层厚度 Thickness | 颜色 Color | 压力试验 PCT | 盐雾时间 SST | 特征 Characteristic |
蓝白锌 Zn | 4-8μm | 蓝白色 Bright Blue | >24H-48H | 一般防护,适用于大多数产品 Regular Protection, Applic to most product | |
彩锌 Colored Zn | 4-8μm | 彩色 Shining Color | >48H-72H | 耐盐雾 Excellent salt apray resistance | |
镍铜镍 NiCuNi | 10-20μm | 银白色 Bright Silver | >48H-72H | >24H-72H | 耐盐雾,耐湿热 Excellent hunidity, heat &salt spray resistance |
化学镍 Electroless Nickel | 10-30μm | 银白色 Bright Silver | >72H | >96H | 耐盐雾,耐湿热 Excellent hunidity, heat &salt spray resistance |
特黑镍 Black Nickel | 10-20μm | 亮黑色 Bright Silver | >72H | >48H-96H | 耐盐雾,耐湿热 Excellent hunidity, heat &salt spray resistance |
锡 Sn | 10-25μm | 银色 Silver | >48H | >36H-72H | 耐盐雾,耐湿热 Excellent hunidity, heat &salt spray resistance |
环氧 Epoxy | 10-30μm | 黑色或灰色 Black or Grey | >72H-108H | 耐盐雾,耐湿热,结合力好 Excellent hunidity,heat &salt spray resistance,excellent adhesion | |
磷化/钝化 Phosphated /passivation | ≤1μm | 深灰色 Dark Grey | ≤2.5H Emerge in 3% NaCl liquor | 临时性保护 Temporary Protection | |
埃弗洛 Everlube | 8-20μm | 黄色 Yellow | >72H | >96H | 耐盐雾,结合力好 Excellent salt spray resistance, Excellent adhesion |
镍铜镍-金 Golden | 10-15μm | 金色 Golden | >48H | >12H | 透亮好看 Good looking |
注:对不同产品的盐雾试验、PCT试验时间,视实际形状而定 Notes:For different products,the salt spray and PCT time varies with the shape and size of the product. |