Super-Black Surfaces

A successful new technique for the production of super-black surfaces has recently been claimed [50]. It consists of immersing the metal or ceramic object in a NiS04/NaH2P02 solution, followed by etching with nitric acid. The Ni/P surface so obtained contains -6% P and has a special craterlike structure which reflects considerably less light than any previonsly known black snrfaces. Surfaces of this type may have medical applications (Section 12.14). 

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Rocket nose cones Super-black surfaces Electroless plating... 

Amorphous and crystalline species are involved in the technology of electrodeposition of amorphous alloys. Microhard and corrosion-resistant surfaces are obtained with Ni/P, Cr/P and Fe/P systems (Section 12.8). Amorphous alloys of this type may also be involved with super black surfaces (Section 12.8). 

The surface area of blacks ranges from 20 m2/cm3 (N990 - Medium thermal black) to 225 m2/cm3 (N110 - Super abrasion furnace black). 

FIGURE 7.8 SEM pictures of a LiCo02 positive electrode (left) and of a surface-treated graphite negative electrode (right) both containing TIMREX KS6 graphite and SUPER P Li carbon black conductive additives. 

Figure 3.5 shows a plot of hardness against volume fraction of filler [ISAF (intermediate super abrasion furnace) black] in the vulcanizate base on the rubber compound formulations shown in Table 3.1. Hardness is defined as the resistance to surface indentation as measured under specified conditions. It is a non-destructive test that measures the reversible deformation when an... 

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