Reactive Multilayers

Durability test of polymer components joined by means of reactive multilayers.
© Fraunhofer IWS
Durability test of polymer components joined by means of reactive multilayers.

By using reactive multilayer systems (RMS), many materials, including metals, ceramics, semiconductors and polymers, can be joined in a material-friendly, low-stress and very fast manner. For this purpose, an RMS directly adapted to the joining process is placed between the two components to be joined and then activated. A chemical, self-propagating reaction occurs, as a result of which heat is provided for joining the components for a very short time and in a narrowly localized manner.

Our Range of Services Includes:

  • Development and production of reactive multilayer systems (RMS)
  • Joining application by means of RMS
  • Characterization of RMS and reactively joined components
  • Simulation of the thermal balance of an RMS joint using COMSOL Multiphysics®
  • Coatings and solder deposition by magnetron sputter deposition

Research Focus


RMS Technology

  • Method and principle
  • Properties and advantages
  • Reactive joining process
  • Simulation


  • Coating system
  • Joining device
  • DSC measuring device
  • Highspeed camera
  • COMSOL Multiphysics® software

Highlights and Scientific Expertise


Technologies for modern lightweight construction


Get an insight into the current publications of the Fraunhofer IWS on reactive multilayers.



Optimized reactive bonding technology based on novel zirconium systems for use in microsystems technology, Timeframe: 09/2020–05/2023 (BMBF, FKZ: 21347 BG)


Model-based reactive joining to increase process safety and reliability, Timeframe: 11/2019–09/2022 (BMBF, FKZ: 20896 BG)

RMS Hermeticity

Hermetic joining of MEMS-based devices using reactive multilayer systems, Timeframe: 03/2016–11/2018 (BMBF, FKZ: 19069 BG)

RMS Plastics

New joining method for the production of thermoplastic and thermoplastic-metal hybrid joints using reactive multilayer systems, Timeframe: 02/2016–07/2018 (BMBF, FKZ: 19035 BR/1)

RMS Rubber Door Seal

Innovative joining technology for automated butt joining of elastomer-based cavity seals, Timeframe: 01/2017–12/2018 (SAB, FKZ: SAB100283656)

News and Media


News / 12.4.2022

High-precision Reactive Joining Technology for Microsystems Engineering


Annual Report Article

Automated Reactive Joining of Elastomer-based Cavity Seals


Product Sheet

Reactive Multilayer Systems

Gentle and Tailored Joining of Different Material Classes