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Hanshan - Motorsport :racing_car: - Coggle Diagram
Hanshan - Motorsport :racing_car:
Steering Racks
Rack and pinion steering mechanisms:
:check: Reduce weight
:red_cross: Teeth of rack wear easily
Nitron treatment
involves an extra sputtering stage where the rack is sputtered in Ar+N2 at 700C before the evaporate and cool stages, and the initial sputtering stage in Ar is longer and at a higher temperature
The additional sputtering causes nitrogen diffusion and therefore a strength increase, and the longer initial sputtering removes the oxide layer
Duplex S treatment of final drive gear
Timetal 550 Alloy:
:check: Strength, fatigue strength and creep
Oxygen deep-case hardening
Oxidaton, formation of TiO2 on the surface
Vaccume dissociation of TiO2 and oxygen diffusion
Results in high surface hardness, which decreases from 50microns from surface
Duplex System as both surface coating and modification
Diamond like carbon
Diamond has SP3 bonds, graphite has SP2 bonds
DLC has mixed SP2/SP3 bonds (amorphous carbon)
Has high hardness, low friction and self lubrication
Friction at contact points turns DLC into graphite at surface = lubricant
Suspension Springs
LCB vs Ti-64
:check:High fatigue strength under torsion (compared toTi-4)
:check:Good formability
:check:Low shear modulus - uses less space and weight
:check:Low cost
:red_cross: Low thermal stability
:red_cross:Not suitable for exhaust valve springs as :arrow_up: temperature
Steel < Ti-64 < Ti LCB
Exhaust system
CP-Ti
Good corrosion resistance
Lightweight
Good formability and weldability
Thermal Oxidation CCT
Surface ceramic conversion
Ti+O2=TiO2
Oxygen diffusion surface hardening
:arrow_up:Hardness, :arrow_up:Young's modulus and :arrow_down:E/H (plasticity index)
Lower coefficient of friction and better wear properties
Flat line is good as no sticking and releasing
