A surgical implant component comprising an implant component body manufactured from a Co-based substrate alloy comprising Co, Cr, Mo, Si, and C, and a coating on a bone-ingrowth surface of the component body manufactured from a Co-based coating alloy comprising Co, Cr, Mo, Si, C and B. The coating is a network of fused particles of the Co-based coating alloy with spherical particles, irregular aspherical particles, and between about 35 and about 70 volume % porosity. A method of manufacturing the foregoing surgical implant component.