PLATING MATERIAL AND PLATING PRETREATMENT METHOD

To provide a plating material that can increase adhesion force of metal plating more than before, and to provide a plating pretreatment method.SOLUTION: A plating fiber 1 includes: a carbon fiber 10; and metal plating 20 for coating the carbon fiber 10, where plating catalyst metal 30 having an average particle diameter of 0.1 nm or more and 30 nm or less is dispersed at a surface of the carbon fiber 10 to be a boundary surface between the carbon fiber 10 and the metal plating 20. A plating pretreatment method includes: an immersion step of loading the carbon fiber 10 into a treatment tank to immerse the carbon fiber into a supercritical fluid including an organometallic complex of the plating catalyst metal 30 or a subcritical fluid; and a decompression step of decompressing the interior of the treatment tank at a speed of 0.05 kg/min or more and 0.2 kg/min or less after immersing the carbon fiber 10 into the fluid in the immersion step.SELECTED DRAWING: Figure 1 【課題】金属めっきの密着力をより高めることができるめっき素材、及び、めっき前処理方法を提供する。【解決手段】めっき繊維１は、炭素繊維１０と、炭素繊維１０を被覆する金属めっき２０とを備え、炭素繊維１０と金属めっき２０との界面となる炭素繊維１０の表面に平均粒径が０．１ｎｍ以上３０ｎｍ以下のめっき用触媒金属３０が分散している。また、めっき前処理方法は、処理槽内に炭素繊維１０を投入し、めっき用触媒金属３０の有機金属錯体を含む超臨界流体又は亜臨界流体中に浸漬する浸漬工程と、浸漬工程において炭素繊維１０を流体中に浸漬させた後に、処理槽内を０．０５ｋｇ／ｍｉｎ以上０．２ｋｇ／ｍｉｎ以下の速度で減圧する減圧工程とを備える。【選択図】図１