What are the major differences between the combustion spraying methods: flame spraying, HVOF, HVAF, and detonation spraying?

Please answer the questions below short, simple and correct.
Don’t use complicate English grammer. It should be easy to understand and follow your answer.
Q1. Which thermal spray process and why would you select for:
a) A metallic coating for corrosion resistance application
b) A ceramic coating for thermal insulation application
Q2. Rank the following processes in the order of typical particle(i) temperature, and (ii) Velocity for a given feedstock: APS, Cold spray, HVAF, Flame spray, and HVOF.
Q3. Rank the following processes in the order of typical coating porosity for a given feedstock: HVOF, HVAF, APS, and Cold spray. Explain your ranking.
Q4. What are the major differences between the combustion spraying methods: flame spraying, HVOF, HVAF, and detonation spraying?

The main reference are as below:
1-J. R. Davis, ”Cold Spray Process,” i Handbook of Thermal Spray Technology, Materials Park, OH, USA, ASM International, 2004, pp. 77-84.
2-L. Pawlowski, ”COLD-GAS SPRAYING METHOD (CGSM),” i The Science and Engineering of Thermal Spray Coatings 2nd ed., Chichester, West Sussex, England, John Wiley & Sons Ltd, 2008, pp. 96-100.

If you did not find the answers here. Please find a suitable references.