Abstract: The present invention is directed to a golf ball having a core surrounded by an outer cover. The outer cover is formed of conventional materials such as a natural or synthetic resin and in accordance with the present invention, a plurality of hard particles is disposed within the outer cover such that a predetermined number of the hard particles protrude from an outer surface of the outer cover. Preferably, the plurality of hard particles comprises diamond particles and the plurality of diamond particles are present in the golf ball cover such that about 1% to about 40% of the total outer surface area of the outer cover is occupied by the plurality of diamond particles.

Abstract: In accordance with the present invention, a process for coating a titanium or titanium alloy golf club head is presented, wherein a brazing composition is securely adhered to the titanium or titanium alloy golf club head, preferably on the striking surface thereof. The brazing composition is disposed on the titanium striking surface and the golf club head is subjected to a vacuum furnace process. The vacuum process of the present invention is designed so that the brazing composition including the plurality of hard particles is securely bonded to the titanium striking surface to form a hard, durable striking surface on the golf club head.