Toyota to Build 50% cheap electric motors by using only 50% rare metals

Neodymium Reduced Magnet Performance

Neodymium Reduced Magnet Performance by Toyota

Toyota, the world's leading car manufacture and the leading sustainable innovator of automobile industry builds 50% cheaper electric motor by using 50% less natural metals in earth. Almost all the industry leaders who includes the Tesla and other electrical equipment manufactures uses powerful magnet type commonly known as neodymium which is rare metal on earth and expensive. Many countries including Norway promoting Co2 emission to be lowered with the time. The only thing which is possible is by introducing more electric drive vehicles and more hydrogen powered vehicles to the roads. Neodymium is the most commonly used metal type on electric motor which are there in the electric drive vehicles which are manufactured in the factories from Japan to Silicon valley.

toyota production stats of electrified vehicles used rare metals

Toyota Production Stats Of Electrified Vehicles Used Rare Metals


The newest electric motor is engineering of neodymium reduced and heat resistant magnets. And this motor doesn't use any terbium (Tb) or dysprosium (Dy) which are declared as critical metals. As toyota states a considerable percentage of neodymium magnets has been replaced using cheap and low cost metals commonly known as lanthanum (La) and cerium (Ce). To use neodymium as the primary metal in the electrical motor is because they do contain a important feature of maintaining high coercivity which is the ability to maintain magnetization and heat resistance.

The problem Toyota needed to address was the 30% magnets which are used in magnets is rare metals because when the magnets puts inside of a motor and plug into a electric drive vehicle it definitely generate more heat than usual from inside of the component and the outside environment factors. Due to environmental impact and the rapidly increasing demand for electric drive vehicles, Toyota motivated to find alternative solution to reduce what's needed in the build. Eventually it will make impact on the cheaper electric drive vehicles.

Toyota has implemented three engineering concepts in this magnets which use less rare metals. Grain Refinement of Magnets by retaining high coercivity at high temperature levels through the reduction of the size of the magnet grains to one tenth (1/10) or less than conventional neodymium magnets. Toyota has implemented two layered high performance grain surface which make the concept possible to use less neodymium in magnets by keeping efficient and performance at a high level. Toyota mixed and made the alloy by mixing with neodymium with 1:3 (La:Ce) to maintain the correct amount of properties which are there in the magnets manufactured by rare earth metals.


Toyota neodymium reduced magnet alloy mixing ratio

La and Ce mixing ratio by Toyota in Neodymium reduced Magnets


With all the new researching and innovations Toyota will support the drive green concepts around the world for 2020 and beyond that.

Source - Toyota