分别采用费氏粒度为0.4μm、0.6μm、0.8μm和1.0μm的细钨粉，通过压制和烧结工艺制备出钨棒，研究了粉末粒度和烧结温度对钨制品烧结致密度和晶粒尺寸的影响。金相组织采集方案：试样经过机械磨削和抛光成平整、光亮、无磨痕或抛光划痕的镜面，采用10-20%的氢氧化钠+铁氰化钾混合液（氢氧化钠与铁氰化钾质量比为1:1）对样品进行腐蚀，腐蚀后的样品在金相显微镜下放大100×或200×进行金相组织观察。密度采集方案：试样先在空气中称重，然后在液体中称重，通过计算得出密度。

Tungsten rods were prepared by pressing and sintering process using fine tungsten powders with Fibonacci particle sizes of 0.4μm, 0.6μm, 0.8μm and 1.0μm. Influence. Metallographic structure collection scheme: The sample is mechanically ground and polished into a smooth, bright, and non-abrasive or polished mirror surface, using a 10-20% sodium hydroxide + potassium ferricyanide mixture (sodium hydroxide and potassium ferricyanide) The mass ratio of potassium ferricyanide is 1:1) The sample is corroded, and the corroded sample is magnified 100× or 200× under a metallurgical microscope to observe the metallographic structure. Density collection scheme: The sample is first weighed in the air, then in the liquid, and the density is calculated.