gradient distribution of particles
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The result showed that the centrifugal casting made the WC particles appear gradient distribution, the hardness of composites displayed gradual lower inward, and the transition zone was strengthened.
结果表明，离心铸造使WC颗粒呈梯度分布，硬度由表及里呈现逐渐降低的趋势，过渡区得到强化；
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