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abstract
P & H Plating - How Could that Happen ? 
Post-mortem on the notorious case where plating shop operator was sentenced to prison for discharging cyanide to a river. Very detailed survey of his firm & its operations and effluent treatment procedures with comments. Firm had invested very substantially in effluent treatment plant.
p-Toluenesulphonic Acid for Electrocolouring of Anodised Aluminium 
 
P.c.b Manufacturer's Effluent Treatment System Results in Semi-Closed Loop 
Case study with photos & flowsheet diagrams of p.c.b effluent treatment based on ion-exchange and electrolytic copper recovery. Neutralisation & batchwise treatment of Pb-Sn are also described.
P.t.f.e Composite Substrate for Printed Circuit Boards 
Description of new RO2800 p.c.b substrate material which has p.t.f.e matrix with glass fibre reinforcement and ceramic powder loading. Its properties are listed and compared with epoxy/glass while details are given of its etching, fabrication into multilayer boards and testing.
P.t.f.e for Corrosion Protection 
Short note shows useful temp. range of p.t.f.e in comparison with 4 other fluorine-cont'g polymers. The permeability of p.t.f.e is plotted vs. temp.
P3E technology - new coatings for cutting & machining tools 
New technique combines advantages of PVD & CVD in a single step, forming very hard coatings at < 600°C. Table compares PVD, CVD & P3E, typically forming an alpha alumina corundum coating, shows equipment & metallographic cross-section of a coating. www.oerlicon.com/coatingservices.de
p3TP - updated formula for quality powder 
Choice of powder, selection of Zn or Fe phosphate system, chrome-free and chrome-containing sealers are discussed.
Pacific Rim News - Business Methods in the Far East 
Essay on business customs, manners, gifts etc when in Far Eastern countries.
Pack aluminisation kinetics of nickel rods and foams.  
MST
Pack Aluminisation of Low Alloy Steels at Temperatures Below 700 ° C. 
SURF
Pack Aluminizing of Cast Iron 
Powder based on 25 to 35% Al, 50-60 alumina, 1-2 ammonium chloride; 5-20 Fe powder.
Pack Cementation Coating System 
A form of CVD is described in which the reactant is packed around the substrate and then heated. A range of coatings for hardness, high temp. oxid'n resistance, corr'n prot'n or lubricity is shown. The app'tus and processing sequences are described. 6 refs.
Pack Cementation of Inconel Super Alloys 
Use of Al for pack cementation of gas turbine components is reported, together with chromium, nickel, zirconium powder mixtures. (Extended Abstract only).
Pack chromizing internal surface of a component 
Heating to form gaseous chromium chloride.
Pack coating of articles with small passageways 
In protective coating metallic articles containing cooling holes by embedding in powder mix containing source of coating constituents, halide activator and inert ceramic material; and heating at 1500-2025°F; cooling holes are partially filled with aq. base organic coating, reducing tendency of powder mix to sinter in cooling holes.