Carbonized metal and method of making it

Claim 1

A CARBONIZED METAL ARTICLE COMPRISING A SHEET METAL BASE, AND A SPONG ROUGH SURFACE BONDING LAYER BONDED TO SAID BASE, SAID BONDING LAYER HAVING A COATING THEREON OF COLLOIDAL GRAPHITE, SAID BONDING LAYER CONSISTING ENTIRELY OF INDIVIDUALLY MICROSCOPICALLY POROUS NICKEL PARTICLES SINTERED TO ONE ANOTHER , WHEREBY EMPTY SPACES ARE PROVIDED IN SAID BONDING LAYER IN THE FORM OF PORES IN THE INDIVIDUAL NICKEL PARTICLES AND VOIDS BETWEEN HE SINTERED NICKEL PARTICLES, THE PARTICLES IN CONTACT WITH SAID BASE BEING SINTERED TO THE BASE FOR BONDING SAID LAYER TO THE BASE, THE OUTER SURFACE OF SAID BONDING LAYER CONSISTING OF A LAYER OF SAID PARTICLES, SAID PARTICLES IN SAID LAYER DEFINING VOIDS THEREBETWEEN AND HAVING PORES THEREIN COMMUNICATING WITH SAID SURFACE, SAID COATING OF COLLOIDAL GRAPHITE BEING IN INTIMATE CONTACT WITH THE SURFACES OF SAID PARTICLES IN SAID LAYER DEFINING SAID VOIDS AND THE PORES THEREIN, WHEREBY SAID COATING IS STRONGLY ADHERENT TO SAID ARTICLE TO PERMIT WORKING OF THE ARTICLE WITHOUT LOSS OF THE COATING AND SAID COATING IS CHARACTERIZED BY IMPROVED CONTINUITY OF SAID OUTER SURFACE FOR CAUSING SAID ARTICLE TO HAVE IMPROVED HEAT RADIATING PROPERTIES.