Editing Disc brake (section)

===Ceramic composites===
{{More citations needed section|date=October 2024}}
{{further|Ceramic matrix composite#Application in brake discs|Reinforced carbon–carbon}}
[[File:AMG Carbon Ceramic brake..JPG|thumb|[[Mercedes-AMG]] carbon ceramic brake]]
[[File:PCCB Wiki 9949.jpg|thumb|[[Porsche 911 Carrera S]] composite ceramic brake]]
[[Ceramic]] discs are used in some high-performance cars and heavy vehicles.

The first development of the modern ceramic brake was made by British engineers for [[TGV]] applications in 1988. The objective was to reduce weight, and the number of brakes per axle, as well as provide stable friction from high speeds and all temperatures. The result was a [[Ceramic composite|carbon-fiber-reinforced ceramic process]] which is now used in various forms for automotive, railway, and aircraft brake applications.

Due to the high heat tolerance and mechanical strength of ceramic composite discs, they are often used on [[Supercar|exotic vehicles]] where the cost is not prohibitive.<ref>{{cite web |date=7 September 2017 |title=Cars With Carbon Ceramic Brakes Are Going to Be the Used Car Plague |work=Autotrader |first=Doug |last=Demuro |url= https://www.autotrader.com/car-news/cars-carbon-ceramic-brakes-are-going-be-used-car-plague-267318 |archive-url= https://web.archive.org/web/20220124031250/https://www.autotrader.com/car-news/cars-carbon-ceramic-brakes-are-going-be-used-car-plague-267318 |archive-date=24 January 2022  |access-date=18 February 2024}}</ref> They are also found in industrial applications where the ceramic disc's lightweight and low-maintenance properties justify the cost. Composite brakes can withstand temperatures that would damage steel discs.

[[Porsche]]'s Composite Ceramic Brakes (PCCB) are siliconized carbon fiber, with high-temperature capability, a 50% weight reduction over iron discs (hence reducing the vehicle's unsprung weight), a significant reduction in dust generation, substantially extended maintenance intervals, and enhanced durability in corrosive environments. Found on some of their more expensive models, it is also an optional brake for all street Porsches at added expense. They can be recognized by the bright yellow paintwork on the aluminum six-piston calipers. The discs are internally vented much like cast-iron ones, and cross-drilled.{{citation needed|date=June 2021}}